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Autres articles (75)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

  • Le profil des utilisateurs

    12 avril 2011, par

    Chaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
    L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...)

Sur d’autres sites (9607)

  • How to write a Live555 FramedSource to allow me to stream H.264 live

    22 juillet 2015, par Garviel

    I’ve been trying to write a class that derives from FramedSource in Live555 that will allow me to stream live data from my D3D9 application to an MP4 or similar.

    What I do each frame is grab the backbuffer into system memory as a texture, then convert it from RGB -> YUV420P, then encode it using x264, then ideally pass the NAL packets on to Live555. I made a class called H264FramedSource that derived from FramedSource basically by copying the DeviceSource file. Instead of the input being an input file, I’ve made it a NAL packet which I update each frame.

    I’m quite new to codecs and streaming, so I could be doing everything completely wrong. In each doGetNextFrame() should I be grabbing the NAL packet and doing something like

    memcpy(fTo, nal->p_payload, nal->i_payload)

    I assume that the payload is my frame data in bytes ? If anybody has an example of a class they derived from FramedSource that might at least be close to what I’m trying to do I would love to see it, this is all new to me and a little tricky to figure out what’s happening. Live555’s documentation is pretty much the code itself which doesn’t exactly make it easy for me to figure out.

  • What is the equivalent of ImageMagick's -liquid-rescale in FFMPEG

    22 février 2024, par Mouaad Abdelghafour AITALI

    I'm interested in the Content-Aware Scale effect. So far, the only way to achieve it is by using ImageMagick (distortion algorithm)

    


    enter image description here

    


    cmd = f"magick {curFramePath}\

-liquid-rescale {100-DISTORT_PERCENTAGE}x{100-DISTORT_PERCENTAGE}%!\

-resize {videoSize[0]}x{videoSize[1]}\! {resFramePath}"


    


    I would love to achieve comparable results using only FFMPEG.

    


    Thank you for your help

    


  • Transcoding and Streaming a video file for Android

    2 août 2013, par Yaron Budowski

    I'm trying to encode a local/static input file (can MP4, for example) into a smaller video file (either by resizing, lesser quality video, etc.) and stream it in parallel (i.e. I can't wait for the encoding process to finish before streaming it back), so it can be played by an Android client (the standard Android video player).

    So I've tried using ffmpeg as follows :

    ffmpeg -re -i input.mp4 -g 52 -acodec libvo_aacenc -ab 64k -vcodec libx264 -vb 448k -f mp4 -movflags frag_keyframe+empty_moov -

    Notice I'm using stdout as the output so I can run ffmpeg and stream its output on the fly

    However, such methods (and other similar methods) don't seem to work on Android - it can't simply play it once it receives "non-standard" files (such as a fragmented MP4s) - it seems like the empty moov atom messes it up.

    I also tried other container formats, such as 3GPP and WebM.

    I'd love to hear any kind of input on this issue...

    Thanks

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